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AUSCERT External Security Bulletin Redistribution
(0Day) Hewlett-Packard Virtual SAN Appliance hydra.exe Login
Request Remote Code Execution Vulnerability
24 March 2011
AusCERT Security Bulletin Summary
Product: Hewlett-Packard Virtual SAN Appliance
Publisher: Zero Day Initiative
Operating System: VMWare ESX Server
Impact/Access: Administrator Compromise -- Remote/Unauthenticated
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ZDI-11-111: (0Day) Hewlett-Packard Virtual SAN Appliance hydra.exe Login Request Remote Code Execution Vulnerability
March 23, 2011
- -- CVSS:
- -- Affected Vendors:
- -- Affected Products:
Hewlett-Packard Virtual SAN Appliance
- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Hewlett-Packard Virtual SAN appliance.
Authentication is not required to exploit this vulnerability.
The flaw exists within the hydra.exe component which listens by default
on port 13838. When parsing a login request the Hydra daemon will call
sscanf() using fixed-length stack buffers and no length checks. A remote
attacker can exploit this vulnerability to execute arbitrary code under
the context of the SYSTEM service.
- -- Vendor Response:
March 23, 2011 - This vulnerability is being disclosed publicly without
a patch in accordance with the ZDI 180 day deadline.
- -- Mitigations:
This vulnerability could be mitigated by administrators by restricting
communication with the hydra agent to known client IP addresses.
- -- Disclosure Timeline:
2010-09-24 - Vulnerability reported to vendor
2011-03-23 - Public release of advisory
- -- Credit:
This vulnerability was discovered by:
* Nicolas Gregoire of Agarri (www.agarri.fr)
- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.
Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:
The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
Our vulnerability disclosure policy is available online at:
Follow the ZDI on Twitter:
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